Controller for elevators



8 Smeetssheet .1.

W. S. JOHNSON.

CONTROLLER PoR ELBVATORS.

ented Dec. 4', 1888.

fun/11,111,111,

(No Model.) l 3 sheetssheen 2,

Y W. s. JOHNSON.- GONTROLLBR FOR BLBVATORS.

Patented Deo. 4

xmlns. mm, w-uam gmc.

3 sheets-sheen 3.

(No Model.)

w. s. JOHNSON.

CONTROLLER FORBLBVATORS. v 10,393,834'. Patented Deo. 4, 1888,

PATENT OFFICE.

- WAinnin.ls;I .toi-insert, op Minwnninn twist-:osent l .l

v; eem-BQ'naar@@feta/irons, i

srnormcnrxonroming part jef 'I .etersraeent Nq. eeaee, fitted necenberi, 1888. i' .-,Appunniianiy27,1858. serin'Nm2sL17a-Normanni i To all. whom muy 0.0272042775:- V

ot' Milwaukee, in lthe ycounty ot Milwaukee and State of- Wisco'nsin have invented certa-in Improvements in-}(. ontrollers for Elevators, of f Which'the following is a'specitication.

,My invention relates' to that class of hy-'- draulic elevators in vwhich the'caitsnstainingf cable is connected with and operated bv a pistonmoving in `acylinder and controlled in its movement by'a' valve which governs the" admission l and dischargejot the iinid.' The controllingfvalvc is commonly operated bythe direct application of power on the part of the attendant.- throug-h connectingvdevices eXtend-' ing to and moving with the can, 'In practice itis. found Vthat the vlabor of operatihgthe approved forins ot' valve with frequency is very .serious and objectionable. The aim of' my iiivent'ion "is to lessen the labor required by conibining' With the Valve, thii'oiigh the medium ofV suitable gearing,v an operating-motor,which is in turn connected with suitable operatingape pliances onthe moving'car,` the arrangement the position of the valve as required.'4 f

being` such that ,it vis-only neeessarytorthe att-endantto adj ust-or reverse the position of the gearinorder that the motor may change My invention is' susceptible, of embodiment in different forms which are mechanical equivalents, and 'tvgo ot which are illustratet'l iu4` thel 'accompanying draivingslin Which-e' Figure 'lrepresents 'in'elevation an elevator provided With 'my improvements,l tht` car bein g' represented in vertical section.' '-Fgfl is a vertical cent-ral section through' the main cylinder and its controlling-,vake with the at.

tendant motor and gea-ring shown in side clevation. Alig. 3 is zicentralsection on the line a: a; o t'lig'. 2", looking' do' \\l'n`\vard. "lfigxf is a vertical cross-sectiouon the line y y 'ot' Fig-s. 2 and Si y Fig'. 5 'is an elevation, partlyv in section, shop-'ingl nu 'elevator Wit h my ctmtrolling' devices in a modilcd forni. Referringl tti-rigs. 1,2, and Shri re1 n'estnis an `clcvator-car arrainrcd to move vm'ticallv in asuitablcshaft or well, and suspended by a cable, l, which is extended thence over suitable guide-pulleys :1nd connected with the upper end ol a'duplex. piston-rod, C,- projectf ing through the upper en'd ot' a vertical :sta-

tionary cylinder', l'),`\vhich contains the 'pis- .rod.j I have shown tliecar-sustainingcable as carried o'ver 'stationary guide-pulleysb b',

beneath a pulley, b2, attached to the upper end oi .the-piston-"rod, and Ithence upward to a sta-ji tionary or other-support, b3; xbut it" 1nay be applied iny any 'other appropriate manner fori communicating' motion from the piston to the' ton"Efattach'ed-to the lower-end ofthe'piston'vv Be it known tliatflyWnRREN S: .hiinrrs'ornl car'. The cylinder is v4provided with suitable veduction. and induction pipes, e leading .trom itstwo ends to' a reciprocating piston-f valve, IP ,wliich will communicate with a source of Water-supply, and with a suitable drainage tank or pipe.' rlhevalve,.as shown injFig. 2, is adalyted by movement in an axial direction lto direct `t-hewvater into and" out the tivo ends l of the cylinder alternately, for the purposelof' 'effecting' thel elevation and depression of the piston."I

The foreu'oinv )arts are'all of .ordina-r "con-A struction and fai'niliai` to those skilled inthis v art, and as they constitute no part of my' intent-ion a more detailed description thereof is deemed.'unnecessary.' Y

In 'carrying my improvemen tinto practice in 'its preferred t'orm I provide the upper end of the main-valve \spindle kj 'with a screwthread, f', and.. pass the saine through'arov tary nut', G, supported against vend motion; so that. when rotated 'the nut will have the ettect of nioyingthe spindleeiul'wise and of changing' the position` of the 'main valve.' The nut is passed through a rota-11i,y sleeve, lI,connect ed thereto by a spline, ll', that itlnay I nove vertically. This sleeve is located between two horizontally beveled gears L and L', which revolve loosely around the screw,`andwhich are provided on their proximate faces vwith studs lend Z', adapted to engage' corresponding shoulders 'formed on thetwo ends Vof the sleeve, sothat as the sleeve is raised lor vlowered it will engage one or the other ot the gcnl',atlid receiving motion therefrom impart the sane tothe central nut. Y The two gears IJ andLf remain in constant engagement with any, intermediate pinion, BI, which serves to turn them-inthe pposite direction, this pinion'beingsecnred to the rotary shaft N otl a motor, O. rlhis motor, which may be a hydraulic motor, an electricengine, or any other suitable motor known in the art, is arranged,

tol revolve constantlyv in one direction. Hat"n -Ioo support a second ing' lint. liillo lalior to perlorin, it may lie kept in constant motion at slight expense. 'llii'ongli its'action tlie two gears [.ninl l/are revolved constant ly in opposite direct ions, as indicated hy tiie arrows, so that upon. properly moving the slcovoorelulch ll niotion will he instantly communicated tothe niain oi-,controllin'gvalvo in one direction or the other.

'llie clutch-sleeve ll is provided willi a eircunit'orential groove and operated hy a liori- ,5

'/.ontal shipping-lever` l, pivoled al. one ond to a siiitahle support and provided willi studs or plates which engage in a cireunit'erential groove in the sleeve, asshown in l"ig'.4at`tcr a mannercommonly practiced in 'connection n n u l n willi sliding clutches and tainiliar to every mechanic. 'llie upper end ot' this shipping'- lever is heul downward and passed l'lirt'nigh a second lover, Q, which is in turn pivoted at its opposite end to a stationary support', lt.

'llic lover l niay lie connected rigidly to the i level' Q; lint l prol'ei' to provide it with cola lars p on opposite sides ol llielover Q, and to introduce springs p lietwoen the eollars,'as shown, this arrangement serving to release the parts from excessive pressure and prevent them from heingl unduly strained.

I mount iii tholever (.2 a grooved pulley, S, t'rec to move therewith to a liniited'exlent in a vertical direction. Al the top of the shaft orwellway l mount on a suitalile stationary pulley, 'l`, directly aho've pulley S. l provide a rope, cord, or. wire, l', attach the same to the ear at the top or other appropriate point, pass it thence upward over the pulley 'l and downward Vheneatli the inovalile pulley S, and thence upward into the ont', where l attach it to one end ot' a hand-lever,

\\', pivoted upon t'lieiearl and acted upon hy a spring', X', in sueh manner that it tends constantly to keep the coi-d under tension.

is sueli that the pulley and level' stand -normally inthe posilioii shown in lfig. 1, in which position they act through the level' I to hold the elnlcli ll out ol' engag'einent with tli'e gear, so that the main or controlling' valve -lower the pulley S, and

n any posiil may have lioen previously gear L', wlieronpoii the niot'or willact, through 1' the intermediate parts lo inove tl`io inain valve in an upward direction. ll', on the contrary, the hand-lever is moved to the right, itwill the clutch will he thrown into engagement with the gear L' and the main valve will hc lowered.

It will he perceived that, owing to the extension of the cord l' in a vertical direction around the guide-pulleys and-thence to thc top and bottoni of the car, the ear is permitted to ,move vertically without affecting the tension l0r the length of the cord, and without in 'lhc t weight ol the pulley N and its attendant parts.

` any maniu.iall'ooliiig the posilioii ot.' the valve. l provide the earminimonly with a n otchcd plato, Y. uroqnvalent nieanstorsecuringtlie hand-levoi.- in dit'terenl positions. llie cord serves simply as a llexilileeonneel ion between the car and tlio clutch-operaiing level', and as a means ol' enabling' the operator on the movf ing car lo control at will tlie position of the 'l lover. z i

f '.lo ell'eet Vthe positive disengagement ot' the clutch when tho valve has reached its proper i limitl ot' iiiolion in either direction, I provide thevalve-spindle with arnis'fiwaml f to act l E upon the'sliippinglevcr, as plainly shown in i the drawings. \s regards the pulley S, the only requirenient is that it shall he l'ree to rise and fall under th'e influence ol the cord l', and that,`

` it shall he suitably connected with the shipy ping-lever to operatetlie saine. '.lhc lever Q l, to admit ot' 'thepulley heilig applied dircctl y thereto. adopt the flexible connection, suoli as shown g in Fig. In this forni otf the apparatus thecar, the cylinder and piston, the gearing, and the t lever t'or. controlling the gearing are all const rut-ted and arranged in the saine manner as inthe preceding tlgn'res. is, however, provided with a vertical armature, p, the upper ends of which are arranged in the lield .of force of two elcctro-mgnets, Z Z', eit'li'erwitliin their 'coi-es, as shown, or opposite their ends, if preferred, th only ie qnircnient being that the magnets shall serve respect ively to pull the armature andlever upward and downward. 'lwo springs, p and pi, placed againstl the upper and lower Sides serve i the lever l, as shown in dotted lines in'Fg. i

t'okeep the clutch out of action when tln. inagnel'sare inactive. Y

I mountv the magnets in electric-battery circuits connected through fleiible conduct ors 5 with buttons, switches, or equi-valent con trolling'devieesz' and .zion the car, so that the operator may at willcause the excitation of one or the other-of the magnets Controlling cirl cuits and devices suitahle for this use are known in the art in a great variety of forms. either ol` which may be employed. In the forni shown three conductors-onc from the button .2',anotlier from the button :2, and a third common to the two buttons-are joined in a llexiblc eahle and carried froi'n the cm' to a support', .3", at yt lie topor othersuitablepointol' l tliewcllway, whence the common eondnctoe si is carried' to a battery, 2*', and y thence 1o Y' 'llie shipping-lever lo hold the saine in its intermediate position* niay he dispensed with hy snitahly forming.

In place of the cord l", Inlay.'

the two magnets. The other conductors, .2'7"

and s", are carried one to each magnet. When, therefore, the circuitis closed von Athe car by the button z', the nppermagnet, Z,-will be excited, t'he clutclift'hrown into action, and the valve raised. On the other hand. il' the hutton the operated, the ,lower magnetA will be gear, andA thc valve lowered. The release ot' excited, the cable en'gagei'l willi the lower l be understood thtl' may substitute muy one of the other, forms of ArevereinQ-gea'r which claim v'iS-- 2 g nctugtte the screw, the n'iotor connected to said Y 4 one end with the latter, wherebythe attend- 3o `eord Shown in the preceding ligures- A l y notingmotor beingr -well known .in eenneeiiion withother.Classes of lmwhinery.l

`the vlve'to control the action of the piston,

v lVllile I prefer'to en1plo'yth'e 'limyrtiouln'r form of reversing-gear herein Shown, it is to' controlled by a shipping-lever to reverse the motion of apart drivenf rom a continuously- -H-la-vng' thus described my invention, wlmi;

l- Asen improvement in hydraulic elevetors, the enr, its Suspending-oa'bleythe cylinder end' piston for actuatingtlleoable, and

V:is usuel, in combination with. the valve-opn-lratingi serew, the reve-:Sing-gear, and nut to geene-nd thellexilnle gem-controller extending from the gen-nto the cnr and lmovable at ant on the enr. is enabled to' bring,r the motor into action for movingl :the valve.

2. Lhe'ozi-r, theeylinder and its ear-'015mm'- in g' pinion, and the ein1liroll'i11g'-vnl ve, as usual,

in combination wil-h lheumtoigilw, reversible l gearing connecting lthe 1notor1-and valve to i move the latter, the reversing-lever, .the pulley connected fllier'evifitlnV and the Vertical oord passed from vthe oer over a guide-pulley et the topya'nd nlsofunder the lower/pulleyjo a Suitable take-up device onftheear.

3.' In udev-ice for operating en. elevator, the

valve, :md water-Supply and @Weste pipes, of

a, motor con ti n nelly ineetiomsutable clutches intermediateloetween said vmotor and the Spindle o6 Sayid mein Valve, audsuit'able op-" eratin d etfiees forthrowing seid clutches into nud. out of conneetol'n'; forth.

4. lnfCombin-(ttion with aneleVator-car, itsf substantially as set combiimtion, with the movable om; Suspend l n ing-cable, l1 ydraulio eyndernnd plstommmn sus1j)euding-eable, a-n d its ntermittingljf-not v ingmoi-or provided with :L controllingvalve, a Seooud an d constmitly-riuming motor, andintermediate-reverSiug-gem, through which the secondary motor- -eontrols mein motor. 1

theA valve of the pending-cable, and a hydraulic motor for operating Sayid fear, n. eeondztry eoiastantly-actw :died motor andinferniedirl-lieelutehes adztpted to-si'op and start the-"mitin motor, Substanliellyns St-,ltlorliln l lu-'i'estilnmly whereof l hereunto set' my Y handn lhih` lst day of' fune, 18H8, in the presv ence nl' iwo intestine' witnesses. z

e l-MYARR-EN SqJOHNSO'N. 

